HF scientific MicroTPI Field Portable Turbidimeter (Old) - Manual (Page 7)

Figure 1: Top view of the instrument.
1.2 The Display
All of the items that can appear on the display are shown in Figure 2. The display is used
for reporting the turbidity levels and to provide user guidance in the customer setting
routine. In addition, the display also has several other blocks that are used to
communicate error messages and provide user guidance.
Figure 2 – Display used in the instrument.
1.3 The Instrument and Touch Pad
The touch pad has five buttons: ON/OFF, CAL,
↵, t,
and
u.
The ON/OFF button is
used to turn the instrument on and off. The CAL button, when pressed, initiates the
calibration mode of the instrument. The
↵
button, when pressed, indicates to the
instrument that it should take a reading. The
t
and
u
buttons are used to change the
calibration points.
Ref. 22666 (12/04)
Rev. 1.4
3